2605398012571 has 2 divisors, whose sum is σ = 2605398012572. Its totient is φ = 2605398012570.

The previous prime is 2605398012563. The next prime is 2605398012589. The reversal of 2605398012571 is 1752108935062.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2605398012571 - 2³ = 2605398012563 is a prime.

It is not a weakly prime, because it can be changed into another prime (2605398012271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1302699006285 + 1302699006286.

It is an arithmetic number, because the mean of its divisors is an integer number (1302699006286).

Almost surely, 2^{2605398012571} is an apocalyptic number.

2605398012571 is a deficient number, since it is larger than the sum of its proper divisors (1).

2605398012571 is an equidigital number, since it uses as much as digits as its factorization.

2605398012571 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 49.

The spelling of 2605398012571 in words is "two trillion, six hundred five billion, three hundred ninety-eight million, twelve thousand, five hundred seventy-one".